Designing the 'Additional Details' Page

The Additional Details page is provided for organizations that want
to make add an additional page available to a project. For example, some
Organizations use an 'Executive Summary' page. This page is not pre-configured
with any fields. You associate the 'Additional Details' page with a project
by way of the project category. When you configure
a project category you can select the Additional Details section to
include, as well as give it a different name.

You add fields to the 'Additional Details' page on Admin/Setup/All
Entities/Projects/Additional Details. See Designing
the Details Panel for information about how to configure the fields.